Saturn moon Mimas peeps out from behind the larger moon Dione in this view from NASA Cassini spacecraft.

Saturn moon Tethys, with its stark white icy surface, peeps out from behind the larger, hazy, colorful Titan in this view of the two moons obtained by NASA Cassini spacecraft. Saturn rings lie between the two.

NASA Spitzer Space Telescope caught a glimpse of the Cepheus constellation, thirty thousand light-years away; astronomers think theyve found a massive star whose death barely made a peep.

A NASA staff member shows attendees of the USA Science and Engineering Festival what happens to the human body in space without a space suit using a marshmallow bunny. The USA Science and Engineering Festival took place at the Washington Convention Center in Washington, DC on April 26 and 27, 2014. Photo Credit: (NASA/Aubrey Gemignani)

CAPE CANAVERAL, Fla. – The high-fidelity space shuttle model that was on display at the NASA Kennedy Space Center Visitor Complex in Florida negotiates the turn from Kennedy Parkway onto Schwartz Road on its way toward NASA Kennedy Space Center's Launch Complex 39 turn basin. It is standard procedure for large payloads and equipment to travel against the normal flow of traffic under the supervision of a move crew when being transported on or off center property. The 525-foot-tall Vehicle Assembly Building peeps over the treetops, at right. The shuttle was part of a display at the visitor complex that also included an external tank and two solid rocket boosters that were used to show visitors the size of actual space shuttle components. The full-scale shuttle model is being transferred from Kennedy to Space Center Houston, NASA Johnson Space Center's visitor center. The model will stay at the turn basin for a few months until it is ready to be transported to Texas via barge. The move also helps clear the way for the Kennedy Space Center Visitor Complex to begin construction of a new facility next year to display space shuttle Atlantis in 2013. For more information about Space Center Houston, visit http://www.spacecenter.org. Photo credit: NASA/Dimitri Gerondidakis

On July 3, 1936, President Franklin Delano Roosevelt stood amidst the crowd in Big Meadows and officially dedicated Shenandoah National Park in Virginia. The Thematic Mapper on the Landsat satellite captured this view of the heart of Shenandoah National Park on October 10, 2010, at the height of the fall “leaf-peeping” season. The orange and brown swath across the image highlights the hilly backbone of the park, where leaves had turned to their fall colors. The 169-kilometer (105-mile) Skyline Drive that meanders across the crest of the ridge is often jammed with tourists in autumn. The park includes more than 518 miles of hiking trails, including more than 100 miles of the Appalachian Trail. The highest peak is Hawksbill Mountain at 4,051 feet (1,235 m), but the most popular with hikers is Old Rag Mountain. A circuitous eight-mile (13 kilometer) trail leads to an exposed, rocky summit 3,291 feet (1,003 meters) above sea level. The 2,200 foot elevation change from base to summit, combined with several rock scrambles, make Old Rag not only the most popular but also the most dangerous hike. Read more: <a href="http://go.nasa.gov/2bRnFxH" rel="nofollow">go.nasa.gov/2bRnFxH</a> Credit: NASA/Landsat5 <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b> <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b> <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b> <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>